Yamaha RX-V779 Owner's Manual page 20

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2.1-channel system
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Even when no surround speakers are connected, the unit creates the virtual surround
speakers using the front speakers to allow you to enjoy multichannel surround sound
(Virtual CINEMA DSP).
• Add the center speaker to configure a 3.1-channel system.
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En
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Setting the speaker impedance
Under its default settings, the unit is configured for 8-ohm speakers. When using a
6-ohm speaker for any channel, set the speaker impedance to "6  MIN". In this case,
you can also use 4-ohm speakers as the front speakers.
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Before connecting speakers, connect the power cable to an AC wall
outlet.
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While holding down STRAIGHT on the front panel, press
MAIN ZONE z.
MAIN ZONE z
STRAIGHT
3
Check that "SP IMP." is displayed on the front display.
SP IMP. 8 MIN
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Press STRAIGHT to select "6  MIN".
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Press MAIN ZONE z to set the unit to standby mode and remove the
power cable from the AC wall outlet.
You are now ready to connect the speakers.
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